namespace ConsoleApp2.input._1030;

public class Sun : UserTest
{
    public override void M1() => Console.WriteLine("Sun M1");

    public override void M2()
    {
        Console.WriteLine("Sun M2");
    }

    public override void M3()
    {
        Console.WriteLine("Sun M3");
    }

    public override void M4()
    {
        base.M4();
        Console.WriteLine("Sun 重写了 M4 方法");
    }
}